void
mpstream_encode_vdbe_mem(struct mpstream *stream, struct Mem *var)
{
	assert(memIsValid(var));
	if (var->flags & MEM_Null) {
		mpstream_encode_nil(stream);
	} else if (var->flags & MEM_Real) {
		mpstream_encode_double(stream, var->u.r);
	} else if (var->flags & MEM_Int) {
		if (var->u.i >= 0) {
			mpstream_encode_uint(stream, var->u.i);
		} else {
			mpstream_encode_int(stream, var->u.i);
		}
	} else if (var->flags & MEM_Str) {
		mpstream_encode_strn(stream, var->z, var->n);
	} else if (var->flags & MEM_Bool) {
		mpstream_encode_bool(stream, var->u.b);
	} else {
		/* Emit BIN header iff the BLOB doesn't store MsgPack content */
		if ((var->flags & MEM_Subtype) == 0 ||
		     var->subtype != SQL_SUBTYPE_MSGPACK) {
			uint32_t binl = var->n +
					((var->flags & MEM_Zero) ?
					var->u.nZero : 0);
			mpstream_encode_binl(stream, binl);
		}
		mpstream_encode_raw(stream, var->z, var->n);
		if (var->flags & MEM_Zero) {
			for (int i = 0; i < var->u.nZero; i ++)
				mpstream_encode_nil(stream);
		}
	}
}